Selected Websites

APFO Home
Primary source of aerial imagery for the United States Department of Agriculture. Contains over 10,000 images beginning from 1955 to the present

Board on Geographic Names (BGN)
Provides topographic maps from the United States Geological Survey (USGS)

ESA - Observing the Earth
Envisat, the world’s largest and most advanced satellite, has provided scientists with invaluable information for global surveillance and forecasting since it was launched by European Space Agency in 2002.

HighWire
A free online site presenting extensive information on algebraic, functional, ordinary differential, partial differential, integral, and other mathematical equations

Home: Reading primary (biology) literature
Tutorial (with exercise & physiology examples)

Illinois Clearinghouse: Illinois Historical Aerial Photography 1
Provides aerial photography for counties in Illinois.

Illinois GIS data
Illinois GIS data sets

NOAA Earth System Research Laboratory


Science.gov : USA.gov for Science - Government Science Portal
National Institute of Standards and Technology (NIST) Gives the values of scientific constants and explains the SI measurement system

SCIRUS (advanced search)
a free database of scholarly articles and web content. Includes physics, biology, and more. “SCIRUS is the most comprehensive scientific research tool on the web. With [545+ million] scientific items indexed…, it allows researchers to search for not only journal content but also scientists' homepages, courseware, pre-print server material, patents and institutional repository and website information.”

United Nations Publications
Allows you to search their catalogues of over 4,800 titles by subject, keyword, title, ISBN, Publisher, Series, Department, Langauge, and Date. Once you find the a title of interest, use I-Share or WorldCat to look up and request specific items.

USGS NATIONAL GEOLOGIC MAP DATABASE - HOMEPAGE


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